Viewed with the oscilloscope to see all sides of clean and rectangular, the voltage levels are clean 0V - 3.3V.
I tested the driver on Windows 7 32 and 64bit. Send as Tool News I "Hercules" used (for free!).
The seller's service is also excellent, after a delay of the parcel of about 12 days I was immediately offered a refund !!
All in all: Tip-Top, strong buy recommendation!
Addendum:
The cable will also work for a "Roomba 620" program Staubsaugroboter. I simply connected to an old P / S2 keyboard connector cable (which fits into the Roomba Interface Connector) and then you can, for example to program a schedule that "Roomi" eg Wednesdays and Fridays always sets off at 14.30 clock.
